摘要
通过磁控共溅射方法制备了一系列不同硅含量的锆-硅-氮复合薄膜;采用能谱仪、X射线衍射仪、扫描电镜和微力学探针等对复合薄膜进行了表征;研究了薄膜中硅、锆原子比对复合薄膜的显微组织、高温抗氧化性能和力学性能的影响。结果表明:随着硅含量的增加,复合薄膜的ZrN(111)、(220)晶面衍射峰逐渐消失,呈现ZrN(200)择优取向;同时其性能逐渐提高,当硅、锆原子比为0.030时可获得最大硬度和最大弹性模量,分别为37.8 GPa和363 GPa;进一步增加硅含量,复合薄膜向非晶态转化,而薄膜的硬度和弹性模量迅速降低,抗氧化温度显著提高。
A series of Zr-Si-N composite films with different Si contents were prepared by reactive magnetron co-sputtering method. The films were characterized with EDS, XRD, SEM and nano-indentation. The effect of Si content on microstructure, oxidation resistance and mechanical properties of the Zr-Si-N films was studied. The results show that with the increase of Si content, ZrN（111） and ZrN （220） coystal face diffraction peaks of the composite dispeared gradually and ZrN（200） orientation preferred. The maximum hardness and elastic module of Zr- Si-N films are 37. 8 GPa and 363 GPa when Si/Zr atomic rate was 0. 030. With a further increase of Si content in the films, crystalline Zr-Si-N composite films turned into amorphous films and the mechanical properties decreased gradually. The oxidation resistance was obviously improved with the increase of Si content.
出处
《机械工程材料》
CAS
CSCD
北大核心
2008年第9期54-58,共5页
Materials For Mechanical Engineering
基金
国家自然科学基金资助项目(50574044)
